Mini Alarm Clock: Size 7.8*5*2.4cm, the travel alarm clock is very small, you can easily hold it in your hand. Very compact/light/portable for travel. It has a small footprint and fits anywhere you can imagine. Requires 1 LR44 coin cell battery (not included) for use. Retro Alarm Clock: Mini alarm clock case is made of high quality metal material, elegant and fashionable retro shape, mini and cute, do not take up space, very pleasing to the eye, decorate bedroom, kitchen, office or children's room. Easy to Use: Independent alarm switch, simple clock time and alarm setting tuning knob, easy to set and use. There's no snooze button, no ticks, and it's a great wake-up clock for those who have trouble getting up and who are heavy sleepers. Large dial display: The 3D dial replaces the common printed dials on the market. The dial is simple and the large numbers are clear at a glance, which is convenient for the elderly, teenagers and children to read. Good Gifts: Small and portable, it is the perfect decoration and a great gift for family and friends. This is a wonderful Christmas and birthday gift for friends, relatives, colleagues, neighbors, especially children, teenagers and the elderly.